I don't know all that much about the Spectra KC10. It's likely that I might have tried one many years ago, only because back then I'd make the trip over to Sam Ash and Bronen's Music on a fairly regular basis to try out the new boards and would usually turn most if not all of them on to try them out, but if I did try it I don't remember it( Bronen's had some Kawai stuff that I do remember trying ).

Perhaps there are others here who have used one. There are also some user reviews at Sonic state, for what they may be worth to you. Here is the link: http://www.sonicstate.com/synth_reviews/_inc/user_comments.cfm?id=306&print=1

Try doing a search on the net as well. I did just that, hoping that if I saw the board, I might remember it. Based on what I did see, I'm not convinced that this board is going to excel at some of the sounds you are looking for, but it's pretty hard to tell without having it up close and personal. Hopefully, you can play it before you decide..

AJ